Philips DVP5980 Service Manual page 18

Distorted audio and loud noise
Distorted audio and
Check the power supply
voltages +12V and -12V to
the operation
U12 are normal.
Check
muting transistor Q17
and Q18 are normal
Check
muting transistor Q21,
Q23,Q24 are normal
Checking the U12 leads
have not been broken
or open
if the clock signal
ACLK,
ALRCK output by U5
Check whether the U5
or U12 power supply
normal
Replace U5 or U12
loud noise
Yes
amplifying
Yes
whether the
Yes
whether the
Yes
Yes
ONLY FOR VER 12/05
ABCK and
Yes
Yes
4-7
No
Check U12
No
Replace Q17 and Q18
No
Replace Q21,Q23,Q24
No
Correct connection
No
Replace U5
SACLK waveform
SBCLK waveform
No
Check U12
T rouble shooting chart
SLRCK waveform
S